What’s Vulnerable › Vulnerabilities

CVE-2021-21959

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-04 · updated 2026-06-17
• Weakness: CWE-295

Description

A misconfiguration exists in the MQTTS functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. This misconfiguration significantly simplifies a man-in-the-middle attack, which directly leads to control of device functionality.

Affected products

• Sealevel Systems, Inc. SeaConnect 370W: 1.3.34

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1388
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1388

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